Bed-spring.



J. L. YATES.

BED SPRING. APPLICATION FILED MAY 24. I916- Patnted May 29,1917.

'liqz/aq ulmama/10111 110114 A WITNESSES UNITED STATES PATENT OFFICE.

JOHN I1. YATES, NEW YORK, N. Y.

BED-SPRING.

To all whom it mayconoern:

Be it known that I, JOHN L. Yn'rns, a

citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county of Bronx and State of New York, have invented a new and Improved Bed-Spring, of which the followi ng is a full, clear, and exact description.

This invention relates to furniture and has particular reference to bed springs.

Among the objects of the invention is to provide a bed spring construction, the spring proper of which is adapted to be readily adjusted by improved means.

Another object of the invention is to provide resilient supporting means for the spring for operation independently of the adjusting means.

A further object of the invention is to provide improved resilient supporting means for the intermediate ortion of the spring.

A still further object is to provide an improved guard for the adjusting mechanism. 7

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practiCal embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which Figure 1 is a plan view of the entire bed spring structure, one part of the guard being broken away to disclose the adjusting mechanism;

Fi 2 is a vertical longitudinal section on the l1ne 22 of Fig. 1;

Fig. 3 is a vertical longitudinal section of the head end of the spring on a larger scale than Fig. 2 and showing one of the jack bolts in elevation;

Fig. 4 is a view somewhat similar to Fig. 3, but with the section taken on the plane of one of the supporting springs;

Fig. 5 is a fragmentary bottom plan view showing one end of the intermediate support; and

Fig. 6 is a perspective view of one end of the tension casing.

Referring now more particularly to the drawings, I show a spring structure com- Specification of Letters Patent.

Application filed May 24, 1916. Serial No. 99,478.

prising a rigid rectangular frame including side bars 10, a head bar 11, and a foot bar 12 of any suitable material and connected in any desired manner. The bed spring proper may be of any well known or conventional form of woven wire or the like, and is indicated generically at 13. This will be referred to hereinafter by the term spring, and by this term I mean to cover any suitable form of spring portion of a mattress. The foot end of the spring is anchored rigidly and permanently to the foot rail 12 by means of a cleat l4 and the other end of the spring is clamped between the two plates 15 of the tension casing 16. This casing is of a tubular construction and is of a length equal to the width of the spring.

The head rail 11 projects upwardly above the horizontal plane of the upper edge of the foot rail 12 and is bored below its upper edge or in a plane coinciding with the top of the foot rail. The holes are indicated at 17 and 18. The holes 17 are provided for a plurality of jack bolts 19 having loose fit in said holes. The inner ends of these jack bolts are provided with eyes 20 which are adapted to be inserted into the casing 16 through v'ertical slots 21 formed in the face thereof opposite the plates 15. The slots 21 are spaced in the casing according to the spacing of the holes 17 for the jack bolts.

At 22 I show a series of heavy strong tension springs, two for each space between adjacent jack bolts, see Fig. 1. The inner end of each of these springs is projected through a hole 21 in the casing 16 between adjacent slots 21, and is there upset or otherwise rigidly secured. The outer end of each tension spring is straight and threaded and adapted to be projected through a hole 18 of the head rail 11.

In assembling the parts of the structure, the threaded ends of the tension springs are projected through the holes 18 and the winged nuts 25 are run thereon loosely. The jack bolts are then projected forwardly through the holes 17, and upon the threaded end of each is placed a washer 26 and a winged nut 27. Said washer has a spherical face on one side fitting into a similar concavity in the outer face of the head rail. The eyes 20 of the ack bolts are then slipped into the slots 21, and a rod 28 is slipped longitudinally of the casing and through and foot rails and parallel thereto is se-- all of the eyes 20, holding the jack bolts from withdrawal from the casing, The

-nuts 27 arethen tightenedfor the purpose. of tightening'the spring 13, the action of the boltsl9 being to exert proper tension upon the entire spring. This action in the tightening of the spring causes the straight ends of the tension springs to be projected through the head rail, and when the proper tension upon the spring is determined, the nuts '25 are tightened. The nuts 27 may then be loosened so that the load upon the mattress will be normally suspended by the tension springs. When the spring 13 sags due to the load upon it, the loosening of the jack bolts will prevent bending thereof arid the enlargement of the holes 17 and the spherical washers 26, permit the jack bolts to move downwardly with the spring with freedom. If desired, after the tightening of the spring is effected, the jack bolts may be removed by reversal of the assembling operation above described. The enlargement or tapering of the holes 17 permits the manipulation of the bolts for withdrawal if desired.

At any desired place between the head cured a transverse bar 29, the same being connected by means-of bolts or screws 30 operating through slots 31 into the bottom edges of the side rails, see Fig. 5. This cross bar carries a plurality of cups 32 spaced directly below corresponding cups 33 secured to the spring 13. Each cup 33 with the cup below it forms a pair of cups in which a cushion 34 is held for support ing the spring at the desired places between the head. and foot rails. After the spring has been used for some time and becomes weak or loose, itmay be again tightened by manipulation of the jack bolts similarly to the process above described. This tightening or stretching of the spring will have a tendency to throw the upper and lower cups out of alinement, hence I provide the slots .31 to provide for movement of the bar 29 toward the head rail to compensate for .to prevent injury to a person or damage to the bed clothing. When, however, access is to be had to the nuts for manipulation of the springs, the guard may be. lifted and .folded inwardly around the hinge axis 36 until the adjustment'has been completed. \I claim:

1. The combination of a rigid rectangular frame, a spring anchored at one end to one end of the frame, a tubular casing comprising a pair of parallel plates embracing the other end of the spring, means binding the casing tothe spring, a series of jack bolts, means to connect the jack bolts to the casing with their free ends projecting oppositely therefrom toward the other end of the frame, means cooperating with the bolts to draw the same and the casing toward the latter mentioned end of the frame, and a series of adjustably' tensioned coil springs extending between the casing and the end of the frame to support the spring after the proper tension is determined.

2. The combination with a rigid rectangular frame, a spring anchoredat one end to one end of the frame and threaded devices connected to the other end of the spring and projecting through the adjacent end of the. frame to tighten the spring, of

'a metal angular guard for the'latter men tioned end ,of the frame, and means to hinge the ard to the upper edge of said end providing for the guard to hang over the threaded ends aforesaid or to be folded upwardly and inwardly to give access to the threaded devices, substantially as set forth.

, JOHN L. YATES.

Witness:

ERNEST L. SMITH. 

